Combined spike and spring tooth harrow.



N0. 799,399. PATENTED SEPT. 12, 1905.

J. R.-NAYLOR.

COMBINED SPIKE AND SPRING TOOTH HARROW.

APPLICATION nun 1120.21. 1904.

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No. 799,399. PATENTED SEPT. 12, 1905. J. R. NAYLOIL. GOMBINEDSPIKE ANDSPRING TOOTH HARROW.

APPLICATION FILED DEC. 27. 1904.

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ATTORNEY UNITED STATES PATENT OFFICE.

JONATHAN R. NAYLOR, OF THREE RIVERS, MICHIGAN, ASSIGNOR OF ONE- FOURTHTO ALFRED E. NAYLOR, OF THREE RIVERS, MICHIGAN.

COMBINED SPIKE AND SPRING TQOTH HARROW.

, Specification of Letters Patent.

Patented Sept. 12, 1905.

. Application filed December 27,1904. Serial No. 238.513

To all whom, it may concern:

Be it known that I, JONATHAN R. NAYLOR, a citizen of the United States,and a resident of Three Rivers, in the county of St. Joseph, State ofMichigan, have invented a new and useful Combined Spike and Spring ToothHarrow, of which the following is a specification. v

This invention relates to combined spike and spring tooth harrows, inwhich harrows can be used one style of teeth at a time or both style ofteeth at a time, as desired, and the invention especially relates to aharrow of this class patented to me in the United States May 30, 1899,No. 625,793.

The object of the invention is to produce a more possible and convenientplanof adjusting a set of spike-teeth and a set of springteeth in theirrelation to each other in producing certain actions on .the soil and inthrowing the sets of the teeth out of the soil.

In the accompanying drawings, forming a part of this specification,Figure 1 is a plan of one section of a harrow,.parts being broken away;Fig. 2, a side elevation looking from a point at the right of Fig. 1;Fig. 3, an enlarged plan of a front corner attachment of thebarrow-frame; Fig. 4, an enlarged view looking from a point at the leftof Fig. 3; Fig. 5, an enlarged side elevation of a rear cornerattachment of the barrow-frame looking from a point at the left of theright-hand side or from a point at the right of the lefthand side of thebarrow-frame; Fig. 6, an enlarged end elevation looking from a point atthe right of Fig. 5 and showing a broken tooth-bar attached; Fig. 7, anenlarged elevation of one of the tooth-bar double supports looking froma point either at the left of the right-hand side of the frame or at theright of the left-hand side of the frame; Fig. 8, an enlarged sectionnear dotted line 0 c in Fig. 1 looking from a point at the right, partsbeing broken away; Fig. 9, a plan of enlarged broken parts from theright-hand central portion of Fig. 1, and Fig. is an elevation lookingfrom a point below Fig. 9.

Referring to the parts of the drawings pointed out by numerals, 12represents the spring-tooth bars bearing spring-teeth 16, alternatingwith spike-tooth bars 13, bearing spike-teeth 15. These tooth-bars aremade of tubular metal. Taking three of each style tooth-bars andbeginning at the front with a spring-tooth bar 12, we would end at. therear with a spike-tooth bar 13, as in my'former patent above referredto. By this means the last action on the soil was by spring-teeth,leaving a field in rough and uneven condition and frequently leavingfurrows which storms would gully out and wash the soil away. I

overcome this by the addition of the fourth spike-tooth bar 20, bearingspike-teeth 15, the action of which is in the rear of any action byspring-teeth 16, leaving the soil in a line smooth cultivated condition.

One section of the barrow-frame is here shown; but two like sections areusually employed and attached to the draft-rod 17, to which whifiletreesare to be attached in the usual manner. The draft-rod 17 is here shownbroken away at the right-hand end.

In making the frame-sections pipe-like rods 18 at the sides, 19 at thefront, and 20 at the rear are used. The rods at the front corners areheld firmly together by the elbow concaves 42, one above and one belowand clamped together by bolts, as 21, Fig. 4. On the interior of theupper concave 42, Fig. 4, is a nib 43, which is to fit a hole in therods 18 and 19 to prevent them from working loose or pulling out. Therear bar or rod 20 serves the purpose of a rear tooth-bar, as well as arod of the frame-section at the rear. To secure the rear corners, Iemploy the single-tooth-bar supports 22. They are provided withhorizontal concaves 23, Fig. 6, to receive the rear ends of the siderods 18. These tooth-bar supports 22 are bolted at 24 to the under sideof the rods 18, and below this the supports are provided with a doubleWall or an inner wall 25 and an outer wall 26, parallel therewith, andwith a space 27 between, Fig. 6. In the inner wall 25 is a hole 28, Fig.5, to receive the end of the tooth-bar 20 in a man ner to turn orpartially revolve therein, Fig. 6, said tooth-bar 20 being broken awayin said figure. The inner walls 25 form the support to the ends of thetooth-bar 20, the outer wall 26 prevents the tooth-bar from working toofar endwise, and the space 27 provides for passing the hand in andinserting the springkeys 29 into holes in the ends of the toothbars toprevent the latter from drawing out of the holes 28.

The tooth-bar double supports 30 at the sides of the frame sections forthe tooth bars 12 and 13 are the same as the supports 22 for thetooth-bar 20 except they are double, as

12 and 1.3, as in Fig. 1. Like spring-keys 29 are used in the ends ofthese tooth-bars 12 and 13 and serve the additional purpose ofpreventing the side rods 18 from springing out sidewise. Like coneavesfit on the under side of rods 18, and the supports 30 are bolted to therods 18 at 31.

The tooth-bars 12, 13, and 20 have hearings in a central support 50,beneath the bar 35, Figs. 1, 8, 9, and 10. Each spring-tooth-bar 12 hasan upwardly-extended arm 32, and their upper ends are pivotally attachedto a bar 33. Each spike-tooth bar 13 has an upwardly-extended arm 34,the upper ends of which are pivotally attached to a bar 35, Figs. 1, 8,9, and 10.

An ordinary lifting-lever 36 and rack 47 are shown in Figs. 1 and 8, itbeing attached to the arm of the spike-tooth bar 20' at the rear, andwhen swung forward the spike-teeth 15 are thrown out of the soil.

By means of a connection of one of the spring-tooth bars 12 with aspike-tooth bar 13 the spring-teeth 16 are thrown out of the soil at thesame time the spike-teeth are thrown in the soil. 1 make this connectionat a single point by means of what I term a toothed connection,consisting of teeth 44 on the hub of the spike-tooth arm 34 and a shortarm 41, having a hub loose on a contiguous springtooth bar 12, said hubbeing provided with teeth 37, meshing with the teeth 44 of thespike-tooth arm 34. The spring-tooth arm 32, opposite the short arm 41,is provided with an arcuate way 39, and the short arm 41 has a lug 45,Figs. 1, 9, and 10, inserted through said way 39 and held secure by athumb-nut 40. When thus held, a swing of the liftinglever 36 in eitherdirection forward or back partly rotates the tooth-bars 12, 13, and 20in one direction or the other in unison. By

means of bars 33 35, arms 32 34, and this simple toothed connection-at asingle point the action of the lifting-lever 36 first on the spike-toothbars 13 is very easy, whereas in my old patent above referred to, wherethe action was first on the spring-tooth bars and wherein sets of allthe tooth-bars were gearedtogether, the operation of raising the sets oftelelth was very difficult and sometimes impos- S1 e.

When desiring to adjust the spring-teeth 16 in their relation to thespike-teeth 15 with reference to their specific action in the soil ortheir non-action, I simply loosen the thumbnut 40, which frees all thespring-tooth bars 12, since the hub of the short arm 41 is loose on itstooth-bar, when by raising or hearing on one style of teeth all of thatkind are set farther in or out of the soil.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States of America, is

1. Aharrow having a set of revoluble toothbars bearing spike-teeth, anda set of revoluble tooth-bars bearing spring-teeth, provided withupwardly-projecting arms, a bar pivotally attached to the upper ends ofthe arms of each set, a lifting-lever attached to the bar of thespike-tooth set, an arm of one springtooth bar being provided with anarcuate way, a short arm having a hub loose on said tooth-bar and by theside of the way and having a lug passed through the way, a thumbnut onthe lug, and a toothed connection between the hubs of the short arm andthe contiguous spike-tooth arm, substantially as set forth.

2. A harrow having difierent sets of revoluble tooth-bars provided withupwardly-projecting arms, a bar pivotally attached to the upper ends ofthe arms of each set, a lifting-lever attached to one set, an arm of atooth-bar of another set provided with an arcuate way, a short arm bythe side of said way loose on the tooth-bar and having a lug passedthrough the way, a thumb-nut on the lug, and a toothed connectionbetween the hubs of the short arm and the contiguous spike-tooth arm,substantially as set forth.

JONATHAN R. NAYLOR.

Vitnesses:

ALLISON N. KNAPP, W'. E. BARNARD.

